A string is wrapped around auniform disk of mass M = 1.2 kg and radius R = 0.07 m. (Recall thatthe moment of inertia of a uniform disk is (1/2)MR2.) Attached tothe disk are four low-mass rods of radius b = 0.11 m, each with asmall mass m = 0.5 kg at the end. The device is initially at reston a nearly frictionless surface. Then you pull the string with aconstant force F = 29 N. At the instant when the center of the diskhas moved a distance d = 0.039 m, a length w = 0.023 m of stringhas unwound off the disk.
(a) At this instant, what is the speed of the center of theapparatus? v = ? m/s
(b) At this instant, what is the angular speed of theapparatus? w1 = ? radians/s
(c) You keep pulling with constant force 29 N for an additional0.022 s. Now what is the angular speed of the apparatus? w2 = ? radians/s
